Machine for making air-hole glassware.



UNITED STATES PATENT OFFICE.

FRANK H. BLACKBURN, OF FOSTORIA, OHIO, ASSIGNOR- TO THE NATKEXAL ELECTRIC LAMP COMPANY, OF CLEVELAND, OH IO. A ()ORPOR."

' OF NEW JERSEY.

TION

MACHINEFOR MAKING AIR-HOLE GLASSWARE.

Specification of Letters Patent.

Yatented Jan. 23, 1906.-

Application filed Maruh 2,1905. Serial No. 248,021.

Ohio, have invented a certain new and useful Improvement in Machines for Making Air- Ho e Glassware, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

'The object of this invention is to provide a simple and efiicient machine for making holes in air hole glassware. Such lassware is much used in in'candescent gasighting and comprises a suitably-shaped globe having around it a circumferential row of holes.

My invention may be best summarized as consisting of the means employed for making the holes, as hereinafter more fully explained and as definitely set out in the claims.

In the drawings, Figure 1 is a plan of the machine. Fig. 2 is a vertical central section through the same, and Fig. 3 is a perspective view of the completed glassware.

Referring to parts by letters, A represents a disk from the center of which rises a tubular standard a. The disk A is carried by a disk A, supported by a central standard a.

- These parts and their supporting members constitute the frame of the machine. The upper end of thestandard a is adapted to receive within it the lower end of the glassware, (indicated by Z.) Carried by theframe at equidistant points about the axis of the glassware are heaters each composed of the gas-burner B and the air-nozzle C. These nozzles point across the gas-burner radially toward the glassware and are adapted to project an intense flame a ainst the glassware at the spots where the hoes are to be. The heaters are carried by the disk A and receive their supply of fluid from annular passage-ways a and a which are shown as made in the disk A. By having the disks made separate these passage-ways maybe simple grooves in one of the disks. The other disk makes a. tight receive their supply from an air-pipe a and a gas-pipe af'.

On the outer side of the standard a are a se i have arc-shaped arms d projecting through openings into the standard; The points d of The grooves these arms normally project upward, but are' far enough within the wall of the standard to allow the glassware to be conveniently'put in the place over them. There are as many of these members D, equally spaced about the standard, as there are holes to be made in the glassware-six in the embodiment shown. Each inember D is connected by a link E with a central head F, which is mounted on the upper end of a rod G, suitably operated by a treadle J. I

When the various spots where the holes are to be are being heated, the parts are in the position shownin Fig. 2. Then the outer end of the treadle J is depressed, raising the rod G, which, through thelinks E, swings upward and outward the points cl of the members D. These points pressing against the heated spots and passing through them poke out- .ward horns of thin glass, as indicated by dotted lines at .2. By making therocking members of brass they do not adhere to the lass. A reverse movement of the treadle awe down the rod G and withdraws the points (1' from the horns they have produced. When the parts come intov the normal gnition, (shown in Fig. 2,) a yieldingstop is provided by means of the spring H, which the head F engages. Thereafter a depression of the inner end of the treadle draws the head farther downward and swings upward the outer ends of the members D. These outer ends are connected by links K with a rim L, which stands beneath the horns, which have been produced. This ring is guided in avertical path by the guides N. ward movement of the inner end of the treadle elevates this ring sufficiently to cause it The final dovmto impinge the horns and break them off. The breakage takes place close to the Wflll'Of the glassware, where the horn is thinnest.

Releasing the pressure on the treadle allows the spring H to return the parts to normal poware, the combination of means for holding the glassware, means for heating the same in a plurality of separated'spo'ts, and means for forcing suchheated spots awayfrom the adj a-' cent surface of the 'lassware to make a horn which may be eas' y broken oif-to leave a hole.

2. In a machine for making air-hole lass. ware, the combination of. means for holding the glassware, means for heating the same in a plurality of spots, mechanisms for engagin such heated spots on their inner sides an adapted to move outwardly to shove the spots outward in the form of horns, and means for simultaneously operating such mechanisms.

3. In a machine for makingair-hole glassware, the combination of a series of movable members shaped to extend into the glassware, and common operating mechanism-for mov ing said members outwardly to engage the glassware and press out horns thereon.

4. In a machine for making air-hole glass ware, the combination of a standard adapted to hold the glassware, a series of rocking members projecting upwardly within the standard, means for heating theglasswa're', and means, for rocking said members to cause their ends to engage the glassware and force out horns thereon. V

5. In a machine for making air-hole glassware, the combination of a tubular standard adapted to receive at its upper end the glassware to be treated, a series of rocking members pivoted on the outer side'of said standard and having arcual arms extended into the interior of the standard and adapted to point upwardly, mechanism for heating spots on the glassware which are in the path of said arms, and mechanism for rocking said arms to engage and force outwardly said spots.

6. In a machine for making air-hole glassware, in combination, a support for the glassware, a series of heaters arranged about the same and adapted to project flames against gage the heated spots on the glassware and force the same outwardly to make horns thereon.

7. In a machine for making air-hole glassware, the combination of series of movable members, mechanism for moving said mom hers to engage the glassware and press horns thereon, and mechanism for engaging said home to break them off.

I 8. in a'machine for making air h'ole glassware, the combination-of a series of rocking members, means for heating the glassware, means for rocking said members to cause their ends to engage the inner surface of the glassware and force out horns thereon, and

correlatively-timed means for breaking oii the horns.

9. In a machine for making air-hole glassware, the combination of a-suppo'rt for the glassware, a series of heaters arranged about the same and adapted to project flames against it, a series of pivoted rocking members liavin arsual arms, mechanism for rocking said members on theirpivots to cause the points of their arms to engage the inner side of Y the heated spots on the glassware and force the same outwardly to make horns thereon, and mechanlsm operated on the return move-.

ment of said members to engage and break off said horns.

in testimony whereof I hereunto afiix my signature in the presence of two witnesses.

FRANK 'H. BLACKBURN. Witnesses:

MARY F. RomNsoN, Ernnn STAHL. 

